psi

What is a PSI?

Pressure Unit

Definition

PSI (pounds per square inch) is a unit of pressure equal to one pound-force per square inch.

Popular PSI Conversions

Most common conversions from PSI

1 psi = 6,894.76 Pa PSI to Pascals 1 psi = 6.8948 kPa PSI to Kilopascals 1 psi = 0.00689476 MPa PSI to Megapascals 1 psi = 0.068948 bar PSI to Bars 1 psi = 68.9476 mbar PSI to Millibars 1 psi = 0.068046 atm PSI to Atmospheres

History

PSI is commonly used in the United States and other countries using imperial units. It remains standard for tire pressure and industrial applications.

Common Uses

  • Tire pressure in the US
  • Pressure washers
  • Hydraulic systems
  • Compressed gas cylinders

Fun Facts

💡

Car tires are typically inflated to 30-35 psi

💡

A typical pressure washer operates at 1,500-3,000 psi

💡

Human bite force is about 150-200 psi

All PSI Conversions

PSI to Pascals psi → Pa PSI to Kilopascals psi → kPa PSI to Megapascals psi → MPa PSI to Bars psi → bar PSI to Millibars psi → mbar PSI to Atmospheres psi → atm PSI to Torr psi → Torr PSI to mmHg psi → mmHg

Related Units

bar Bar Pa Pascal atm Atmosphere kPa Kilopascal